Thank you for your question, Is it red ? tender to touch ? do you have fever ? is there any rash on this part of chest ?
Thank you for your reply, two possible causes of this pain are lung or muscle ache. if this pain is severe then you should get an X ray of the chest. If this pain is fading away then no need to worry as it is possibly a muscle ache. You can take tylenol or advil to help resolve the pain. Thank you.